AISI 8650 Alloy Steel Chemical Composition Properties, Grades, Table and Document

AISI 8650 is a low-alloy steel offered with exceptional physical characteristics, namely high strength and toughness. The number of elements includes carbon, manganese, chromium, nickel, molybdenum, and silicon which are mostly inspected and analyzed in term of their mechanical properties and performance. This alloy is characterized by excellent hardenability resulting in the ability to get various heat treatments for reached highly desirable hardness resulting in necessary strength and resistance to wear for its use in different applications. The attributes of AISI 8650 alloy steel will vary with a number of manufacturing methods and physical procedures, leading potentially to contrasting performances. Detailed chemical composition tables, chart and grades of properties of AISI 8650 will act as primary resources for engineers, metallurgists and manufacturers who plans using AISI 8650 in different industrial applications.

AISI 8650 Alloy Steel Chemical Composition And Grade Table

AISI 8650 alloy steel is a premium product appreciated by people for its high-strength performance. Generally, its chemical structure highlights carbon, manganese, chromium, nickel, molybdenum, and silicon. By merging all these constituents together, steel's mechanical and physical properties get bestowed with certain properties that depend on its chemical composition and make it perfect for various harsh applications, such as in aerospace, automotive and machineries. AISI_8650 lies under the SAE AISI system as one of the grade 8 steel. The chemical composition and any specification grades guarantee continuous processing and reliable performance on processes such as engineering and manufacturing processes.

AISI 8650 Alloy Steel Composition Table
Elements Iron, Fe Manganese, Mn Carbon, C Nickel, Ni Chromium, Cr Silicon, Si Molybdenum, Mo Sulfur, S Phosphorous, P
Min (%) 96.54 0.75 0.48 0.4 0.4 0.15 0.15 - -
Max (%) 97.67 1 0.53 0.7 0.6 0.3 0.25 ≤ 0.0450 ≤ 0.0350

Advantages and Disadvantages of AISI 8650 Alloy Steel


  • High Strength and Toughness: Provides excellent tensile strength and impact resistance.

  • Good Wear Resistance: Designed to withstand wear and tear.

  • Machinability: Good machinability in the annealed state.

  • Fair Weldability: Can be welded using routine techniques with care.


  • Limited Hardenability: May not uniformly harden large sections effectively.

  • Susceptible to Decarburization: Needs protection from oxidation during heat treatment.

  • Corrosion Susceptibility: Moderate corrosion resistance; requires protection in corrosive environments.

  • Complex Heat Treatment: Mechanical properties depend on precise heat treatment processes.

Related Topics

Here is another related topic that you may also like.